We are professional laboratory equipment manufacturer in China,Vacuum drying oven is one of our main products, including vacuum drying oven and blast drying oven,The vacuum drying ovens are include:DZF-6010 vacuum drying oven, DZF-6020 vacuum drying oven, DZF-6050 vacuum drying oven, DZF-6090 vacuum drying oven,etc.
The vacuum drying oven can dry materials at room temperature or even low temperature. It is especially suitable for rapid drying of heat-sensitive, easily decomposed, and easily oxidized items. It is widely used in food processing, pharmaceuticals and other industries.A calibrated wireless temperature recorder was used to measure the temperature distribution characteristics of the vacuum drying oven under two working conditions of normal pressure and 1 kPa. The research results show that the temperature fluctuations in the vacuum drying oven are less than 1 under these two conditions. ℃; Due to the change of heat transfer mode, the uniformity of the temperature field under the condition of 1 kpa becomes worse.(laboratory equipment vacuum drying oven) The vacuum drying oven puts the material in a vacuum environment, thereby reducing the boiling point of water. The water inside the material diffuses to the surface through the pressure difference, and the water molecules obtain sufficient kinetic energy on the surface of the material. After overcoming the attraction between the molecules, it is pumped by the vacuum pump. It can be discharged, so as to realize the drying of materials at room temperature or even low temperature. It is especially suitable for rapid drying of heat-sensitive, easily decomposed, and easily oxidized items. It is widely used in food processing, pharmaceuticals and other industries.(large capacity drying oven)

To ensure the accuracy of the temperature measurement of the vacuum drying oven, it is necessary to trace the temperature measurement of the vacuum drying oven regularly. Ordinary environmental test chambers work under normal pressure and are generally equipped with forced air circulation devices, while vacuum drying chambers generally work under vacuum conditions and have strict requirements on the tightness of the box. Even if they are not vacuumed, due to the lack of forced air circulation, The fluctuation, uniformity, and indication error of the temperature field in the box will also be different from those of the ordinary environmental test box.After vacuuming, the heat transfer mode in the vacuum drying oven is changed, and only radiation heat transfer exists, which will also cause the final temperature field to change. Therefore, it is necessary to study the characteristics of the temperature distribution in the vacuum drying oven to provide a basis for the formulation of the temperature calibration method of the vacuum drying oven.(large industrial drying ovens)
The wireless temperature recorder is used as the temperature measurement equipment. The wireless temperature recorder is turned on by computer software, and then placed in a vacuum drying oven to start recording data. After the recording is completed, take out the wireless temperature recorder and use the computer software to read the temperature data. The maximum allowable error of the wireless temperature recorder measurement is less than 0.1 ℃, and the temperature data is recorded every 30 s during the test.When the vacuum drying oven is in use, the items are placed at the bottom of the vacuum drying oven, and the bottom is the working area of the vacuum drying oven. Therefore, there are 5 temperature measurement points on the bottom and 1 point in the geometric center of the oven to test the vacuum drying oven. The spatial temperature distribution.Before the start of the test, first number the wireless temperature recorder and put it into each temperature measurement point in the vacuum drying oven, then close the door and turn on the power supply. This paper tested the temperature distribution under normal pressure and 1 kPa. In the test, according to the test requirements, the pressure in the vacuum drying box was controlled by a vacuum pump. After the pressure in the vacuum drying box reached a predetermined pressure, the vacuum valve was closed and the vacuum drying was turned on. In the heating system of the oven, the temperature of the vacuum drying oven is set to 50 ℃ in the test. After the indicated temperature of the vacuum drying oven reaches the set temperature, continue to stabilize for more than 2 hours to ensure that the temperature of each test point of the vacuum drying oven is stable.(vacuum drying oven with pump)